1
|
Hameed S, Sharif S, Ovais M, Xiong H. Emerging trends and future challenges of advanced 2D nanomaterials for combating bacterial resistance. Bioact Mater 2024; 38:225-257. [PMID: 38745587 PMCID: PMC11090881 DOI: 10.1016/j.bioactmat.2024.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
The number of multi-drug-resistant bacteria has increased over the last few decades, which has caused a detrimental impact on public health worldwide. In resolving antibiotic resistance development among different bacterial communities, new antimicrobial agents and nanoparticle-based strategies need to be designed foreseeing the slow discovery of new functioning antibiotics. Advanced research studies have revealed the significant disinfection potential of two-dimensional nanomaterials (2D NMs) to be severed as effective antibacterial agents due to their unique physicochemical properties. This review covers the current research progress of 2D NMs-based antibacterial strategies based on an inclusive explanation of 2D NMs' impact as antibacterial agents, including a detailed introduction to each possible well-known antibacterial mechanism. The impact of the physicochemical properties of 2D NMs on their antibacterial activities has been deliberated while explaining the toxic effects of 2D NMs and discussing their biomedical significance, dysbiosis, and cellular nanotoxicity. Adding to the challenges, we also discussed the major issues regarding the current quality and availability of nanotoxicity data. However, smart advancements are required to fabricate biocompatible 2D antibacterial NMs and exploit their potential to combat bacterial resistance clinically.
Collapse
Affiliation(s)
- Saima Hameed
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Sumaira Sharif
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Muhammad Ovais
- BGI Genomics, BGI Shenzhen, Shenzhen, 518083, Guangdong, PR China
| | - Hai Xiong
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| |
Collapse
|
2
|
Kumawat A, Jasuja K, Ghoroi C. TiB 2-Derived Nanosheets Enhance the Tensile Strength and Controlled Drug Release of Biopolymeric Films Used in Wound Healing. ACS APPLIED BIO MATERIALS 2023; 6:4111-4126. [PMID: 37796555 DOI: 10.1021/acsabm.3c00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Wound healing using an alginate-based biopolymeric film is one of the most preferred treatments. However, these films lack mechanical strength (elasticity and tensile strength), show higher initial burst release, and exhibit high vapor permeability. The present study reports the development of nanosheets derived from titanium diboride (10 nm) (NTB)-incorporated biopolymeric films (0.025, 0.05, and 0.1% w/v) using sodium alginate (SA) and carboxymethyl cellulose (CMC) to overcome the shortfalls. The surface properties of the film, nanosheet distribution within the film, and possible interactions with the film are explored by using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared (FTIR), and X-ray diffraction (XRD). These analyses confirm that nanosheets are uniformly distributed in the film and introduce unevenness on the film's surface. The tensile strength of the nanosheet-incorporated film (0.1% NTB film) using UTM is found to be 24.30 MPa (six times higher compared to the blank film), equivalent to human skin. The water vapor transmission rate of the film is also found to be in the desired range (i.e., 2000-2500 g/m2 day). The biocompatibility of the NTB film is confirmed by the MTT assay test using NIH/3T3 cells and HEK 293 cells. Furthermore, the scratch assay shows that the developed films promote cell migration and proliferation. The antibacterial activity of the film is also demonstrated using a model drug, tetracycline hydrochloride (TCl). Besides, the film exhibits the sustained release of TCl and follows the Korsmeyer-Peppas model for drug release. Overall, the 0.1% w/v NTB film is easy to fabricate, biocompatible and shows superior mechanical properties.
Collapse
Affiliation(s)
- Akshant Kumawat
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
| | - Kabeer Jasuja
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
| | - Chinmay Ghoroi
- DryProTech Lab. and BoRN Research Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382055, Gujarat, India
| |
Collapse
|
3
|
Emanet M, Okuda M, Şen Ö, Lavarello C, Petretto A, Takeoka S, Ciofani G. Sumac ( Rhus coriaria) Extract-Loaded Polymeric Nanosheets Efficiently Protect Human Dermal Fibroblasts from Oxidative Stress. ACS APPLIED BIO MATERIALS 2022; 5:5901-5910. [PMID: 36426992 PMCID: PMC9768808 DOI: 10.1021/acsabm.2c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Under healthy physiological conditions, living organisms possess a variety of antioxidant mechanisms to scavenge overproduced reactive oxygen species (ROS). However, under pathological circumstances, endogenous antioxidant systems may not be adequate to eliminate the excessive amount of oxidants, and thus, a continuous exogenous antioxidant income is required. In this regard, sumac (Rhus coriaria) extract is a good candidate for therapeutic applications, because of its high content of antioxidant polyphenolic compounds. In this work, sumac extract-loaded nanosheets (sumac-nanosheet) have been exploited for loading and controlled release of sumac extract, envisioning topical drug delivery applications. Sumac extract has been obtained through the solvent extraction method, and polymeric nanosheets have been thereafter prepared through the spin coating-assisted layer-by-layer deposition of polycaprolactone (PCL), sumac extract, and poly(d,l-lactic acid) (PDLLA). The collected data show a rich content of the sumac extract in terms of polyphenolic compounds, as well as its strong antioxidant properties. Moreover, for the first time in the literature, we demonstrated the possibility of efficiently loading such extract in polymeric nanosheets and the suitability of this nanoplatform as a reactive oxygen species scavenger in human dermal fibroblasts treated with a pro-oxidant insult.
Collapse
Affiliation(s)
- Melis Emanet
- Istituto
Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, 56025Pontedera, Pisa, Italy,Waseda
University, Waseda Research
Institute for Science and Engineering, 3-4-1 Okubo, 169-8555Shinjuku, Tokyo, Japan,
| | - Mayu Okuda
- Waseda
University, Department of Life Science and
Medical Bioscience, 2-2
Wakamatsu, 162-8480Shinjuku, Tokyo, Japan
| | - Özlem Şen
- Istituto
Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, 56025Pontedera, Pisa, Italy
| | - Chiara Lavarello
- IRCCS
Istituto Giannina Gaslini, Core Facilities-Clinical
Proteomics and Metabolomics, Via Gerolamo Gaslini 5, 16147Genova, Italy
| | - Andrea Petretto
- IRCCS
Istituto Giannina Gaslini, Core Facilities-Clinical
Proteomics and Metabolomics, Via Gerolamo Gaslini 5, 16147Genova, Italy
| | - Shinji Takeoka
- Waseda
University, Waseda Research
Institute for Science and Engineering, 3-4-1 Okubo, 169-8555Shinjuku, Tokyo, Japan,Waseda
University, Department of Life Science and
Medical Bioscience, 2-2
Wakamatsu, 162-8480Shinjuku, Tokyo, Japan,
| | - Gianni Ciofani
- Istituto
Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, 56025Pontedera, Pisa, Italy,Waseda
University, Waseda Research
Institute for Science and Engineering, 3-4-1 Okubo, 169-8555Shinjuku, Tokyo, Japan,
| |
Collapse
|
4
|
Suzuki T, Sato K, Seki T, Seki T. Study of Polymer Nanofilms Using for High-Throughput Screening in the Development of Transdermal Therapeutic System. Chem Pharm Bull (Tokyo) 2022; 70:868-875. [PMID: 36450585 DOI: 10.1248/cpb.c22-00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
We investigated polymer nanofilm (PNF) for use in high-throughput screening (HTS) to promote the development of transdermal therapeutic systems (TTS). The drug permeability of PNF with a 1 : 1 weight mix ratio of poly(L-lactic acid) (PLLA) and poly(methylhydrosiloxane) (PMHS) (PLLA/PMHS (1/1) PNF) and Strat-M® of the transdermal diffusion test membrane, was evaluated using 12 kinds of drugs with the logarithmic value of n-octanol/water partition coefficients of -4.70 to 3.86. The lag time of PLLA/PMHS (1/1) PNF made via polymer alloying was significantly shorter than that of Strat-M® for 10 drug types, and the formation of a highly diffusible PMHS-rich phase accompanying the formation of a sea-island structure was suggested as a contributing factor. Additionally, a high correlation was confirmed between the measured value for the logarithm of the apparent permeability coefficient of PLLA/PMHS (1/1) PNF and the literature values for the logarithm of the apparent permeability coefficient of human skin (r = 0.929). This study shows that PLLA/PMHS (1/1) PNF can reliably predict drug permeability in human skin and can potentially be used in HTS for developing TTS.
Collapse
Affiliation(s)
| | - Kanae Sato
- Faculty of Pharmaceutical Sciences, Josai University
| | - Tomohiro Seki
- Faculty of Pharmaceutical Sciences, Josai University
| | | |
Collapse
|
5
|
Hatanaka T, Ramphai K, Takimoto S, Kanda H, Motosugi N, Kimura M, Mabuchi T, Oyama M, Takeuchi T, Okamura Y. Potential UV-Protective Effect of Freestanding Biodegradable Nanosheet-Based Sunscreen Preparations in XPA-Deficient Mice. Pharmaceutics 2022; 14:pharmaceutics14020431. [PMID: 35214163 PMCID: PMC8878169 DOI: 10.3390/pharmaceutics14020431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 02/01/2023] Open
Abstract
Xeroderma pigmentosum (XP) is a rare autosomal recessive hereditary disorder. As patients with XP are deficient in nucleotide excision repair, they show severe photosensitivity symptoms. Although skin protection from ultraviolet (UV) radiation is essential to improve the life expectancy of such patients, the optimal protective effect is not achieved even with sunscreen application, owing to the low usability of the preparations. Nanosheets are two-dimensional nanostructures with a thickness in the nanometer range. The extremely large aspect ratios of the nanosheets result in high transparency, flexibility, and adhesiveness. Moreover, their high moisture permeability enables their application to any area of the skin for a long time. We fabricated preparations containing avobenzone (BMDBM) based on freestanding poly (L-lactic acid) (PLLA) nanosheets through a spin-coating process. Although monolayered PLLA nanosheets did not contain enough BMDBM to protect against UV radiation, the layered nanosheets, consisting of five discrete BMDBM nanosheets, showed high UV absorbance without lowering the adhesive strength against skin. Inflammatory reactions in XPA-deficient mice after UV radiation were completely suppressed by the application of BMDBM-layered nanosheets to the skin. Thus, the BMDBM layered nanosheet could serve as a potential sunscreen preparation to improve the quality of life of patients with XP.
Collapse
Affiliation(s)
- Tomomi Hatanaka
- School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Japan; (M.O.); (T.T.)
- Faculty of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (N.M.); (T.M.)
- Correspondence: (T.H.); (Y.O.)
| | - Khampeeraphan Ramphai
- Department of Applied Chemistry, School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan;
| | - Shun Takimoto
- Course of Applied Science, Graduate School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan; (S.T.); (H.K.)
| | - Hiromi Kanda
- Course of Applied Science, Graduate School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan; (S.T.); (H.K.)
| | - Nami Motosugi
- Faculty of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (N.M.); (T.M.)
| | - Minoru Kimura
- The Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara 259-1193, Japan;
| | - Tomotaka Mabuchi
- Faculty of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (N.M.); (T.M.)
| | - Midori Oyama
- School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Japan; (M.O.); (T.T.)
| | - Tomoharu Takeuchi
- School of Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Japan; (M.O.); (T.T.)
| | - Yosuke Okamura
- Department of Applied Chemistry, School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan;
- Course of Applied Science, Graduate School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan; (S.T.); (H.K.)
- Correspondence: (T.H.); (Y.O.)
| |
Collapse
|
6
|
Davis R, Urbanowski RA, Gaharwar AK. 2D layered nanomaterials for therapeutics delivery. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021; 20. [DOI: 10.1016/j.cobme.2021.100319] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
7
|
Despotopoulou D, Lagopati N, Pispas S, Gazouli M, Demetzos C, Pippa N. The technology of transdermal delivery nanosystems: from design and development to preclinical studies. Int J Pharm 2021; 611:121290. [PMID: 34788674 DOI: 10.1016/j.ijpharm.2021.121290] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/02/2021] [Accepted: 11/08/2021] [Indexed: 12/18/2022]
Abstract
Transdermal administration has gained much attention due to the remarkable advantages such as patient compliance, drug escape from first-pass elimination, favorable pharmacokinetic profile and prolonged release properties. However, the major limitation of these systems is the limited skin penetration of the stratum corneum, the skin's most important barrier, which protects the body from the insertion of substances from the environment. Transdermal drug delivery systems are aiming to the disruption of the stratum corneum in order for the active pharmaceutical ingredients to enter successfully the circulation. Therefore, nanoparticles are holding a great promise because they can act as effective penetration enhancers due to their small size and other physicochemical properties that will be analyzed thoroughly in this report. Apart from the investigation of the physicochemical parameters, a comparison between the different types of nanoparticles will be performed. The complexity of skin anatomy and the unclear mechanisms of penetration should be taken into consideration to reach some realistic conclusions regarding the way that the described parameters affect the skin permeability. To the best of the authors knowledge, this is among the few reports on the literature describing the technology of transdermal delivery systems and how this technology affects the biological activity.
Collapse
Affiliation(s)
- Despoina Despotopoulou
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece
| | - Nefeli Lagopati
- Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Maria Gazouli
- Department of Basic Medical Science, Laboratory of Biology, School of Medicine National and Kapodistrian University of Athens, Greece
| | - Costas Demetzos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece
| | - Natassa Pippa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
| |
Collapse
|
8
|
Shetty K, Sherje AP. Nano intervention in topical delivery of corticosteroid for psoriasis and atopic dermatitis-a systematic review. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:88. [PMID: 34331599 PMCID: PMC8325647 DOI: 10.1007/s10856-021-06558-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 07/07/2021] [Indexed: 05/03/2023]
Abstract
Atopic dermatitis (AD) and psoriasis are highly prevalent, complex, chronic inflammatory skin diseases that immensly affect the patient's quality of life. While there is no definitive cure for these conditions, suppressive medications aim at managing the symptoms of these diseases. The application of emollients accompanied by symptomatic anti-inflammatory therapy consisting of topical corticosteroids (TCS) is extensively employed for controlling the symptoms among general practitioners making this therapeutic class an indispensable pillar of dermatotherapeutics. The first TCS, hydrocortisone (HC) introduced in the early 1950s led to the development of different steroidal moieties of varying potencies by inducing chemical modifications to the basic steroid structure. The wide spectrum of the available range of formulations and potency provides flexibility to treat all patient groups, different phases of the diseases, and different anatomical sites. Conventional TCS therapy suffers from drawbacks such as low drug permeation and retention rate. Thus, novel nanoformulations have been developed to overcome these problems. This review provides an insight into the current state of nanocarrier-mediated topical delivery of corticosteroids monotherapy and combination therapy with special emphasis on targeting psoriasis and AD.
Collapse
Affiliation(s)
- Kshitya Shetty
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India
| | - Atul P Sherje
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India.
| |
Collapse
|
9
|
Mori K, Usuzaka E, Oshizaka T, Takei C, Todo H, Sugibayashi K. Use of Silicone Membrane Permeation to Assess Thermodynamic Activities of Ionic Liquids and Their Component Cation and Anion. Chem Pharm Bull (Tokyo) 2021; 69:481-487. [PMID: 33952857 DOI: 10.1248/cpb.c21-00033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ionic liquid (IL) was prepared by mixing lidocaine and ibuprofen as a cation and anion, respectively, at various ratios. We determined the permeation of both compounds from the IL through a silicone membrane selected as a model biological membrane, and mathematically analyzed the permeation data from the viewpoint of the thermodynamic activities of lidocaine, ibuprofen, and the IL. As a result, IL and ibuprofen diffusely permeated through the membrane in the case of applying IL preparations with a molar fraction of ibuprofen of 0.5 or higher. The IL was thought to separate into lidocaine and ibuprofen in the receiver. On the other hand, when applying IL preparations with a molar fraction of lidocaine of 0.5 or higher, IL and lidocaine permeated. The permeation rate of IL itself was maximized when the applied IL was prepared using equimolar amounts of lidocaine and ibuprofen, and it decreased when the fraction of lidocaine or ibuprofen increased by more than 0.5. Their membrane permeation rates increased with an increase in their activity, and no more increase was found when the drugs were saturated in the IL. These membrane permeation profiles reflected well the mathematically calculated ones according to the concept of activity.
Collapse
Affiliation(s)
- Kenji Mori
- Faculty of Pharmaceutical Sciences, Josai International University
| | - Eri Usuzaka
- Faculty of Pharmaceutical Sciences, Josai International University
| | - Takeshi Oshizaka
- Faculty of Pharmaceutical Sciences, Josai International University
| | - Chihiro Takei
- Faculty of Pharmaceutical Sciences, Josai International University
| | - Hiroaki Todo
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
| | - Kenji Sugibayashi
- Faculty of Pharmaceutical Sciences, Josai International University.,Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
| |
Collapse
|
10
|
Sakuragi M, Takahashi Y, Ehara K, Kusakabe K. Self-standing magnetic composite nanosheets prepared in the presence of an external magnetic field: Characterization and potential for medical applications. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820958604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study is to develop self-standing, ultrathin film, nanosheets with high magnetic response for use in a medical device that can be migrated to a target location in the body by using an external magnetic field. First, iron oxide nanoparticles are synthesized by either the sol-gel method or thermal decomposition. The resulting magnetic properties of the nanoparticles show that the thermal decomposition method provides a greater saturation magnetization value than the sol-gel method. Next, the nanoparticles obtained by the thermal decomposition method are embedded into nanosheets of poly(L-lactide) at varying concentrations. Embedding of the nanoparticles in the composite nanosheets is achieved by the application of an external magnetic field. The composite nanosheets are then characterized. The thickness of the nanosheet increases, and the nanoparticles are well dispersed, with an increase in poly (L-lactide) concentration. The NP-embedded nanosheets are imaged by transmission electron microscopy, which reveals thin, long aggregates aligned in collinear line features. X-ray diffraction results indicate that the magnetic hard axis of the nanoparticles in the nanosheets is aligned in parallel to the plane of the nanosheet by magnetic field application during nanosheet preparation. In addition, the nanosheets at high poly (L-lactide) concentrations that had been subjected to a magnetic field during preparation show a slightly greater magnetic response compared with both nanosheets without magnetic field exposure and nanosheets prepared at low poly (L-lactide) concentrations.
Collapse
Affiliation(s)
- Mina Sakuragi
- Department of Nanoscience, Sojo University, Kumamoto, Japan
| | | | - Keito Ehara
- Department of Nanoscience, Sojo University, Kumamoto, Japan
| | | |
Collapse
|
11
|
Duncan DI. Commentary on: Topical Nanofat Biocrème Improves Aesthetic Outcomes of Nonablative Fractionated Laser Treatment: A Preliminary Report. Aesthet Surg J 2020; 40:900-903. [PMID: 31886858 DOI: 10.1093/asj/sjz293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
12
|
Durán IR, Vanslambrouck S, Chevallier P, Hoesli CA, Laroche G. Atmospheric pressure cold plasma versus wet-chemical surface treatments for carboxyl functionalization of polylactic acid: A first step toward covalent immobilization of bioactive molecules. Colloids Surf B Biointerfaces 2020; 189:110847. [PMID: 32086024 DOI: 10.1016/j.colsurfb.2020.110847] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 01/07/2020] [Accepted: 02/04/2020] [Indexed: 12/12/2022]
Abstract
The use of polylactic acid (PLA) has attracted growing interest, particularly in recent years, for biomedical applications because of its mechanical properties, biocompatibility, and biodegradability. Despite this, features such as surface hydrophobicity and the absence of suitable functional groups for covalent immobilization of bioactive molecules, make it challenging to endow PLA-based medical devices with additional features and thus broaden their range of applicability. In the present study, we demonstrate the suitability of atmospheric pressure dielectric barrier discharges operating in the Townsend regime as a promising alternative to other surface treatments, such as diazonium and alkali hydrolytic treatments, for carboxyl functionalization of PLA. Chemical changes in PLA surfaces are evaluated by contact angle measurements and by X-ray photoelectron spectroscopy while physical changes are investigated by scanning electron microscopy and atomic force microscopy. The amount of carboxyl groups generated on PLA surfaces is assessed by toluidine blue O assay and substantiated by grafting, through carboxyl groups, a fluorescent probe containing amino functionalities. All of the surface treatments have proven to be very effective in generating carboxylic groups on the PLA surface. Nevertheless, plasma treatment is shown to not degrade the PLA surface, in sharp contrast with diazonium and alkali hydrolytic treatments.
Collapse
Affiliation(s)
- Iván Rodríguez Durán
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Stéphanie Vanslambrouck
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Pascale Chevallier
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada
| | - Corinne A Hoesli
- Stem Cell Bioprocessing Laboratory, Department of Chemical Engineering, McGill University, Wong Building, 3610 University Street, Montreal, H3A 0C5, Canada
| | - Gaétan Laroche
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de génie des mines, de la métallurgie et des matériaux, Université Laval, 1065, avenue de la Médecine, Québec City, G1V 0A6, Canada; Axe Médecine Régénératrice, Centre de recherche du CHU de Québec, Hôpital St. François d'Assise, 10, rue de l'Espinay, Québec city, G1L 3L5, Canada.
| |
Collapse
|